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cxgb3 - fix EEH

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Reset the chip when the PCI link goes down.
Preserve the napi structure when a sge qset's resources are freed.
Replay only HW initialization when the chip comes out of reset.

Signed-off-by: Divy Le ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Divy Le Ray
2008-05-06 19:26:01 -07:00
committed by Jeff Garzik
parent 48c4b6dbb7
commit 204e2f98c2
5 changed files with 70 additions and 6 deletions
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29
drivers/net/cxgb3/sge.c
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@@ -538,6 +538,31 @@ static void *alloc_ring(struct pci_dev *pdev, size_t nelem, size_t elem_size,
return p;
}
/**
* t3_reset_qset - reset a sge qset
* @q: the queue set
*
* Reset the qset structure.
* the NAPI structure is preserved in the event of
* the qset's reincarnation, for example during EEH recovery.
*/
static void t3_reset_qset(struct sge_qset *q)
{
if (q->adap &&
!(q->adap->flags & NAPI_INIT)) {
memset(q, 0, sizeof(*q));
return;
}
q->adap = NULL;
memset(&q->rspq, 0, sizeof(q->rspq));
memset(q->fl, 0, sizeof(struct sge_fl) * SGE_RXQ_PER_SET);
memset(q->txq, 0, sizeof(struct sge_txq) * SGE_TXQ_PER_SET);
q->txq_stopped = 0;
memset(&q->tx_reclaim_timer, 0, sizeof(q->tx_reclaim_timer));
}
/**
* free_qset - free the resources of an SGE queue set
* @adapter: the adapter owning the queue set
@@ -594,7 +619,7 @@ static void t3_free_qset(struct adapter *adapter, struct sge_qset *q)
q->rspq.desc, q->rspq.phys_addr);
}
memset(q, 0, sizeof(*q));
t3_reset_qset(q);
}
/**
@@ -1365,7 +1390,7 @@ static void restart_ctrlq(unsigned long data)
*/
int t3_mgmt_tx(struct adapter *adap, struct sk_buff *skb)
{
int ret;
int ret;
local_bh_disable();
ret = ctrl_xmit(adap, &adap->sge.qs[0].txq[TXQ_CTRL], skb);
local_bh_enable();